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Red-sky: fix edge-case in NaN avoidance code

Browse source 
https://sourceforge.net/p/flightgear/codetickets/2087/
for discussion on this.
This commit is contained in:
James Turner 2019-01-08 11:08:23 +00:00
parent b0dc850df1
commit dd6294b5ea
1 changed files with 1 additions and 1 deletions
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2
src/Environment/environment.cxx
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@ -796,7 +796,7 @@ FGEnvironment::_recalc_density_tropo_avg_kgm3 ()
const double vaporpressure = 6.11 * pow(10.0, ((7.5 * dewpoint_degc) / (237.7 + dewpoint_degc)));
const double virtual_temp = (temperature_degc + 273.15) / (1 - 0.379 * (vaporpressure/pressure_mb));
if ((pressure_mb <= 0.0) || (virtual_temp < 0.0)) {
if ((pressure_mb <= 0.0) || (virtual_temp <= 0.0)) {
density_tropo_avg_kgm3 = 0.0;
return;
}